Electronics Forum | Fri Jun 25 13:56:01 EDT 2010 | tate350
Consider using wavesolder pallets that keep the board flat during wave. Keep the board in the pallet after wave until it cools down a bit then remove it.
Electronics Forum | Thu Jul 01 11:48:10 EDT 2010 | mb_mfg
Sid, Try baking the boards before running, to insure no moisture. Baking out the moisture will help prevent warping. Should you need further assistance, we supply fixtures to force the board to stay flat to reduce to thermo shock during wave solde
Electronics Forum | Fri Jul 16 11:27:57 EDT 2010 | davef
Consider: * Bow & Twist IPC-TM-650; Method 2.4.22 * Previous threads on SMTnet, like: http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=54498
Electronics Forum | Thu Apr 28 17:00:28 EDT 2016 | thejedeye
That is a large board, maybe some supports to help with bow. http://www.nozzleforled.info/ezload-pcb-support-modules.html
Electronics Forum | Mon Jul 05 03:53:36 EDT 2004 | johnwnz
Hey, this is something that I've looked at and published a paper on back in 2003 at Apex, actually pert of one, the other part was lookign at how effective X-ray systems (lamanography systems) were at detecting & measuring BGA void size accuratly (co
Electronics Forum | Fri Jun 25 15:04:39 EDT 2010 | siddharth
Thanks for you suggestions, guys. davef, I am gonna get with my PCB suppliers and talk to them about copper balancing and checking the Tg of the materials they use. SC, I am working towards designing wave pallets for my boards and try your suggesti
Electronics Forum | Tue Jun 29 14:44:26 EDT 2010 | rgduval
There are some good suggestions here...reflow pallets, and copper balancing. We would also suggest verifying that your problem is not caused by moisture. How much time passed between first side and second side reflow, and how humid is the environme
Electronics Forum | Fri Jun 18 17:36:10 EDT 2010 | sid
Good afternoon all, I have been trying to find a solution to a defect I just noticed. After stencil printing and smt part placement on the secondary side of my boards, I run them through a wave soldering system. All my components got soldered perfe
Electronics Forum | Fri Jun 11 01:40:40 EDT 1999 | Gyver
| | | Hello all! | | | Recently we got a problem about the Funtional test. Some boards passed tests by using the auto-fixture(vacuum), but failed by using manual test fixture(need to plug CPU, DIMM etc.). The error symptom is no picture. We doubt it'
Electronics Forum | Tue Jul 06 05:00:33 EDT 2010 | smthexi
Hello Sid: i don't know where you bought the machine. the central support system is an addition part, it is specially designed to prevent the PCB board from bowing. i know that the wave soldering machine which made before did not include this useful
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